factories.py 文件源码

def validate(self, data):
        for field in self.Meta.fields:
            try:
                model_field = self.Meta.model._meta.get_field(field)
                if hasattr(model_field, 'default') and model_field.default != NOT_PROVIDED and \
                        data.get(field, NOT_PROVIDED) is None:
                    data.pop(field)
            except FieldDoesNotExist:
                pass

        return super(NullToDefaultMixin, self).validate(data)